为探索新型便利的电力传输技术,该文结合之前提出的空间电场耦合单线电力传输(single-wire power transmission,SWPT)系统及其集总参数电路模型,开展了多种基于电路结构和参数的仿真研究。包括输入输出阻抗、输出电压、输出功率,以及传...为探索新型便利的电力传输技术,该文结合之前提出的空间电场耦合单线电力传输(single-wire power transmission,SWPT)系统及其集总参数电路模型,开展了多种基于电路结构和参数的仿真研究。包括输入输出阻抗、输出电压、输出功率,以及传输效率的频率特性;特斯拉变压器高压线圈上端导体对地电容、传输距离、负载阻抗等参数对SWPT系统性能的影响。在仿真过程中,对SWPT系统的电磁现象和规律进行了解释,讨论了两个不同谐振频率的特点,分析了影响传输功率和传输效率的关键因素。最后构建了单线电力传输示范系统,并在室内和室外环境下进行试验,传输距离分别为10和30m,最大传输功率达到80W。单线电力传输的研究可视为实现长无线电力传输的关键步骤之一。展开更多
There are three well known types of wire lines for transmitting electrical energy or information. The first type is ordinary two wires line （below A-Line）. The second type is so-called single-wire line, where ground...There are three well known types of wire lines for transmitting electrical energy or information. The first type is ordinary two wires line （below A-Line）. The second type is so-called single-wire line, where ground plays the role instead of second wire. Polyphase systems belong to the third type, three phase system is the most popular among them. The purpose of this article is another attempt to build a one-wired （without ground） system--the transmission of electrical energy. In this paper an original idea of building such a system is justified, the results of simulations and laboratory modeling are presented. It is shown that the proposed method can reduce the cost of electric transmission lines, the losses in them and significantly reduce interferences.展开更多
We propose a one-step method to prepare multi-qubit GHZ and W states with transmon qubits capacitively coupled to a superconducting transmission line resonator(TLR).Compared with the scheme firstly introduced by Wang ...We propose a one-step method to prepare multi-qubit GHZ and W states with transmon qubits capacitively coupled to a superconducting transmission line resonator(TLR).Compared with the scheme firstly introduced by Wang et al.[Phys.Rev.B 81(2010) 104524],our schemes have longer dephasing time and much shorter operation time because the transmon qubits we used are not only more robust to the decoherence and the unavoidable parameter variations,but also have much stronger coupling constant with TLR.Based on the favourable properties of transmons and TLR,our method is more feasible in experiment.展开更多
文摘为探索新型便利的电力传输技术,该文结合之前提出的空间电场耦合单线电力传输(single-wire power transmission,SWPT)系统及其集总参数电路模型,开展了多种基于电路结构和参数的仿真研究。包括输入输出阻抗、输出电压、输出功率,以及传输效率的频率特性;特斯拉变压器高压线圈上端导体对地电容、传输距离、负载阻抗等参数对SWPT系统性能的影响。在仿真过程中,对SWPT系统的电磁现象和规律进行了解释,讨论了两个不同谐振频率的特点,分析了影响传输功率和传输效率的关键因素。最后构建了单线电力传输示范系统,并在室内和室外环境下进行试验,传输距离分别为10和30m,最大传输功率达到80W。单线电力传输的研究可视为实现长无线电力传输的关键步骤之一。
文摘There are three well known types of wire lines for transmitting electrical energy or information. The first type is ordinary two wires line （below A-Line）. The second type is so-called single-wire line, where ground plays the role instead of second wire. Polyphase systems belong to the third type, three phase system is the most popular among them. The purpose of this article is another attempt to build a one-wired （without ground） system--the transmission of electrical energy. In this paper an original idea of building such a system is justified, the results of simulations and laboratory modeling are presented. It is shown that the proposed method can reduce the cost of electric transmission lines, the losses in them and significantly reduce interferences.
基金Supported by the National Natural Science Foundation of China under Grant No. 10947017/A05Key Lab of Novel Thin Film Solar Cells (KF200912)Graduates’ Innovative Scientific Research Project of Zhejiang Province under Grant No. 2011831
文摘We propose a one-step method to prepare multi-qubit GHZ and W states with transmon qubits capacitively coupled to a superconducting transmission line resonator(TLR).Compared with the scheme firstly introduced by Wang et al.[Phys.Rev.B 81(2010) 104524],our schemes have longer dephasing time and much shorter operation time because the transmon qubits we used are not only more robust to the decoherence and the unavoidable parameter variations,but also have much stronger coupling constant with TLR.Based on the favourable properties of transmons and TLR,our method is more feasible in experiment.
